I read this paragraph last night and it made me think of Apple's approach to refining the design of macOS over the past few years.

Researchers have experimented with minimalist interfaces that reduce the prominence of window borders, scrollbars, and other familiar GUI controls, but few tangible results have been obtained. One problem is that hiding 'distracting' controls also removes the visual affordances... those elements provide. The scrollbar itself, for example, reminds the user of its availability as well as its operation. Removing visual cues is disorienting, particularly for beginning users, but also for expereinced users who can be disrupted by the abrupt transitions as controls materialize and disappear again.

— Kevin Mullet & Darrell Sano, Designing Visual Interfaces: Communication Oriented Techniques (SunSoft Press, 1995), p. 24